CUCM RS232 port usage

Hi Folks, Yes I know tha the serial port of server was there to connect to a 3rd part voicemail system (not that I ever saw one) but what if I need to use it for something else - can it be done? I may well have a requirement for users to initiate sending some character string out of the RS232 port by pressing say an URL fast dial button on a phone.

I'm not able to access my old voice mail messages all of a sudden. The recording says something like 'the message is currently not available'. This has never happened before in all the years I have been using this system. I have t...
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